MIPS64: [turbofan] Add checked load/store operators.

src/mips64/macro-assembler-mips64.h

Index: src/mips64/macro-assembler-mips64.h
diff --git a/src/mips64/macro-assembler-mips64.h b/src/mips64/macro-assembler-mips64.h
index f0f009f3e56c53435030948c2cde5334b4a36e94..8fe546d39d1ebac76589eb289aff4ae61c3b9d49 100644
--- a/src/mips64/macro-assembler-mips64.h
+++ b/src/mips64/macro-assembler-mips64.h
@@ -271,8 +271,10 @@ class MacroAssembler: public Assembler {
     mthc1(src_high, dst);
   }
 
-  // Conditional move.
+  void Move(FPURegister dst, float imm);
   void Move(FPURegister dst, double imm);
+
+  // Conditional move.
   void Movz(Register rd, Register rs, Register rt);
   void Movn(Register rd, Register rs, Register rt);
   void Movt(Register rd, Register rs, uint16_t cc = 0);